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require 'spec_helper' describe 'Veritas::Algebra::Summarization' do subject { relation.summarize(by) { |r| r.add(:count) { |accumulator, _| accumulator.to_i + 1 } } } let(:header) { [ [ :name, String ], [ :qty, Integer ] ] } let(:relation) { Relation.new(header, [ [ 'Dan Kubb', 1 ], [ 'John Doe', 1 ] ]) } let(:by_header) { header.values_at(0) } context 'summarize on the same set' do let(:by) { Relation.new(by_header, [ [ 'Dan Kubb' ], [ 'John Doe' ] ]) } it 'returns a relation with a single tuple' do should == [ [ 'Dan Kubb', 1 ], [ 'John Doe', 1 ] ] end end context 'summarize on an smaller set' do let(:by) { Relation.new(by_header, [ [ 'Dan Kubb' ] ]) } it 'returns a relation with a single tuple' do should == [ [ 'Dan Kubb', 1 ] ] end end context 'summarize on an larger set' do let(:by) { Relation.new(by_header, [ [ 'Dan Kubb' ], [ 'Dane Largy' ] ]) } it 'returns a relation with a single tuple' do pending 'TODO: fix error when Proc-based aggregate functions can have a default accumulator specified' do should == [ [ 'Dan Kubb', 1 ], [ 'Dane Largy', 0 ] ] end end end end
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
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veritas-0.0.2 | spec/integration/veritas/algebra/summarization_spec.rb |